Please let us know your results.
Make sure to stay on the gluten until after the biopsy.
The pancreatitis is probably due to your high triglycerides.
Try to eat fat free until it clears up. That often helps.

Me, I had IBS diarrhea alternating with constipation, fibromyalgia, chronic fatigue, depression, obesity, allergic rhinitis, asthma, hypertension, gastric reflux, type II diabetes, low ferritin levels and high white count levels. All of these have improved since going gluten-free. Except the diabetes, it got worse because I was eating more sugar than usual. So now I'm doing gluten-free and sugar-free. I've never felt better in my life. Hang in there.

Before diagnosis I had IBS-A and depression, fatigue and brain fog as my major symptoms.

I delibrately glutened myself once out of frustration of not being able to eat what I wanted.3 hours later I had stomach pain and threw up several times. It took me 3 days to really feel back to normal.

A doctor told me it might not be the gluten and the only way to know for sure is to do it again. So, like an idiot, I did it again. 2 hours later I had projectile vomiting at work. When I say projectile, I mean the bathroom door and floor. All over it. I finally stopped throwing long enough to drag myself back to my desk. Then it started again. The wall and carpeting in my office, the paper shredder, and I half filled my wastepaper basket. Oh, and I threw up again in the car on the way home. DH came to get me because I was too sick and dizzy to get myself home. I was in bed for 48 hours. I took about a week to really feel completely better.

Well, if the obvious things have been ruled out, it's time to look at the not so obvious.

Did the symptoms start after the hysterectomy? Was it a vaginal hysterectomy? There's always a possibility of nerve damage from surgery, and your symptoms sound like it could be nerve damage.
Especially since you mentioned it was a difficult surgery.

I would suggest you see your doctor and ask if you can start a course of Neurontin (gabapentin). It is used to treat all sorts of nerve pain. It may take increasing the dose several times before you see any effect, but it's worth hanging in there. I hope this helps.